Alert archive / Florida / Tornado Warnings in 2009

Tornado Warning 27, NWS Mobile, AL

March 31, 2009Okaloosa County, Florida

NWS Mobile, AL issued this tornado warning at Mar 31, 2009, 3:31 PM CDT for Okaloosa County, Florida. It was in force for 13 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Mar 31, 2009, 3:31 PM CDT (20:31 UTC)
Expired: Mar 31, 2009, 3:44 PM CDT
In force: 13 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

County Okaloosa County, FL

The radar

The Eglin Afb radar (KEVX), 63 km from the middle of the area, began a volume at 20:35 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Mar 31, 1:05 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 8.5 hours before the alert went out and 213 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2169 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 243 m²/s²
0-3 km storm-relative helicity: 172 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WFUS54 KMOB 312031
TORMOB
FLC091-312115-
/O.NEW.KMOB.TO.W.0027.090331T2031Z-090331T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOBILE AL
331 PM CDT TUE MAR 31 2009

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN OKALOOSA COUNTY IN NORTHWEST FLORIDA...

* UNTIL 415 PM CDT

* AT 324 PM CDT...THE NATIONAL WEATHER SERVICE INDICATED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 8 MILES SOUTHWEST OF
  LAUREL HILL...OR ABOUT 8 MILES NORTH OF CRESTVIEW...MOVING EAST AT
  30 MPH.

* THE  TORNADO WILL PASS OVER RURAL NORTHEASTERN OKALOOSA COUNTY AT  
  THROUGH 345 PM CDT.

THE SAFEST PLACE TO BE DURING A TORNADO IS ON THE LOWEST FLOOR OF A
STURDY BUILDING...PREFERABLY IN AN INTERIOR HALLWAY OR A ROOM SUCH AS
A CLOSET OR BATHROOM. IF POSSIBLE...GET UNDER A WORKBENCH OR OTHER
PIECE OF STURDY FURNITURE. USE BLANKETS OR PILLOWS TO COVER YOUR BODY
AND ALWAYS STAY AWAY FROM WINDOWS. IN ADDITION TO THE TORNADO...THIS
STORM IS CAPABLE OF PRODUCING LARGE DAMAGING HAIL OR DAMAGING
STRAIGHT LINE WINDS.

IF YOU ARE IN MOBILE HOME...EVACUATE IT AND GET ON THE LOWEST FLOOR
OF A NEARBY STURDY BUILDING OR IN AN UNDERGROUND STORM SHELTER. IF NO
SUBSTANTIAL SHELTER IS AVAILABLE AND A TORNADO IS FAST APPROACHING...
SEEK SHELTER IN A CULVERT...DITCH OR LOW DEPRESSION AND COVER YOUR
HEAD WITH YOUR HANDS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM CDT
TUESDAY EVENING FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND
SOUTHEAST MISSISSIPPI.

LAT...LON 3082 8638 3084 8658 3093 8658 3099 8642
      3099 8638
TIME...MOT...LOC 2030Z 271DEG 23KT 3088 8652

$$

1 follow-up statement

000 
WWUS54 KMOB 312044
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
344 PM CDT TUE MAR 31 2009

FLC091-312054-
/O.CAN.KMOB.TO.W.0027.000000T0000Z-090331T2115Z/
OKALOOSA FL-
344 PM CDT TUE MAR 31 2009

...THE TORNADO WARNING FOR NORTHEASTERN OKALOOSA COUNTY IS
CANCELLED...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM CDT
TUESDAY EVENING FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND
SOUTHEAST MISSISSIPPI.

LAT...LON 3082 8638 3084 8658 3093 8658 3099 8642
      3099 8638
TIME...MOT...LOC 2044Z 180DEG 0KT 3088 8656

$$

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 31, 1:25 PM CDT	Tornado Warning	MOB	Escambia	65 min
Mar 31, 2:03 PM CDT	Severe Thunderstorm Warning	MOB	Escambia, Santa Rosa	42 min
Mar 31, 2:13 PM CDT	Severe Thunderstorm Warning	MOB	Escambia, Santa Rosa	47 min
Mar 31, 2:45 PM CDT	Severe Thunderstorm Warning	MOB	Santa Rosa	37 min
Mar 31, 2:56 PM CDT	Flash Flood Warning	MOB	Escambia, Okaloosa, Santa Rosa	6 hr
Mar 31, 3:02 PM CDT	Tornado Warning	MOB	Okaloosa, Santa Rosa	31 min
Mar 31, 3:15 PM CDT	Severe Thunderstorm Warning	MOB	Okaloosa, Santa Rosa	45 min
Mar 31, 5:39 PM CDT	Tornado Warning	MOB	Escambia	20 min

Nearby

Tornado Warnings in Florida, 2009 Every tornado warning in 2009 Tornadoes in 2009

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.